CN217056351U

CN217056351U - Bellows sealing stop valve

Info

Publication number: CN217056351U
Application number: CN202220646129.XU
Authority: CN
Inventors: 康治红; 吴娇娇
Original assignee: Gongnai Valve Co ltd
Current assignee: Gongnai Valve Co ltd
Priority date: 2022-03-22
Filing date: 2022-03-22
Publication date: 2022-07-26
Anticipated expiration: 2032-03-22

Abstract

The utility model relates to a bellows seal stop valve, including valve body, upper cover, valve clack and valve rod, the upper cover is fixed connection above the valve body, the valve clack is arranged in the valve body, the lower extreme of valve rod is fixed connection with the valve clack, the upper end of valve rod upwards penetrates out of the upper cover, be equipped with the valve rod actuating mechanism that is used for driving it to reciprocate on the valve rod, be equipped with the corrugated metal pipe in the valve body, the corrugated metal pipe cover is established outside the valve rod, the upper end of corrugated metal pipe is fixed connection with the umbrella-shaped housing, be equipped with the screw thread head that is used for threaded connection on the upper cover on the housing, be equipped with the retainer plate on the lower side edge of housing, the retainer plate is compressed tightly between upper cover and valve body, fixedly connected with the fixed plate on the lower extreme of corrugated metal pipe, the fixed plate is fixed connection on the valve clack, the utility model discloses a setting of corrugated metal pipe has improved sealing performance, the medium is prevented from leaking from between the valve stem and the upper cover.

Description

Bellows sealing stop valve

Technical Field

The utility model relates to the technical field of valves, especially a bellows seal stop valve.

Background

The stop valve, also called the stop valve, is the most widely used valve, it is popular because the frictional force between the sealed face is little among the switching process, and is more durable, and the closure principle of stop valve is, rely on valve rod pressure, make valve clack sealed face and valve seat sealed face closely laminate, prevent the medium circulation, current stop valve is after using a certain time, because the valve rod reciprocates for a long time for the upper cover, consequently just can lead to the filler wearing and tearing between valve rod and the upper cover to lead to taking place the medium easily between valve rod and the upper cover and reveal.

SUMMERY OF THE UTILITY MODEL

The utility model provides a bellows seal stop valve, it has improved sealing performance, prevents that the medium from taking place to reveal from between valve rod and the upper cover, has solved the above-mentioned problem that exists in the use among the prior art.

The technical scheme of the utility model is realized like this: the utility model provides a bellows seal stop valve, includes valve body, upper cover, valve clack and valve rod, upper cover fixed connection is in the valve body top, the valve clack sets up in the valve body, the lower extreme and the valve clack fixed connection of valve rod, upwards the upper end of valve rod pierces through the upper cover, be equipped with on the valve rod and be used for driving its valve rod actuating mechanism who reciprocates, be equipped with corrugated metal pipe in the valve body, corrugated metal pipe establishes outside the valve rod, corrugated metal pipe's upper end fixedly connected with is umbelliform housing, be equipped with on the housing and be used for threaded connection to cover the screw thread head on, be equipped with the retainer plate on the lower side edge of housing, the retainer plate is compressed tightly between upper cover and valve body, corrugated metal pipe's lower end goes up the fixedly connected with fixed plate, fixed plate fixed connection is on the valve clack.

Preferably, valve rod actuating mechanism is including adjusting screw, commentaries on classics cover, hand wheel, mount pad and uide bushing, fixedly connected with support on the lateral wall of upper cover, mount pad fixed connection is on the support, the mount pad is located the valve rod top, change the fixed cover of cover and establish outside adjusting screw, change the cover and rotate to connect on the mount pad, hand wheel fixed connection is on changeing the lateral wall of cover, it has opening screw hole up to open on the valve rod, adjusting screw's lower extreme screw-thread fit is in the screw hole, fixedly connected with limit slider on the upper end of valve rod, the uide bushing is connected on the support, the uide bushing cover is established outside the valve rod, it has the spout to open in the uide bushing, limit slider sliding fit is on the spout.

Preferably, the upper end of the adjusting screw penetrates through the rotating sleeve, the adjusting screw is provided with an oil injection channel, and the oil injection channel penetrates through the upper end and the lower end of the adjusting screw.

Preferably, a plurality of oil outlet holes are formed in the side wall of the adjusting screw, and the oil outlet holes are communicated with the oil filling channel.

Preferably, the rotating sleeve is rotatably connected with a cover plate used for covering the upper end of the oil injection channel.

Preferably, an oil filling port communicated with the rotating sleeve is formed in the side wall of the mounting seat, and a plug is arranged on the oil filling port.

Preferably, the upper side and the lower side of the fixing ring are both provided with a sealing ring.

To sum up, the beneficial effects of the utility model reside in that:

1. the utility model discloses a be equipped with the corrugated metal pipe box at the valve rod overcoat, corrugated metal pipe's lower extreme passes through fixed plate fixed connection on the valve clack, and corrugated metal pipe's upper end fixedly connected with housing, housing pass through the screw thread head and connect and cover last, and the lower side edge of housing compresses tightly between upper cover and valve body through the retainer plate, and consequently the medium in the valve body need just can enter into between valve rod and the upper cover through corrugated metal pipe or housing, to sum up, the utility model discloses a corrugated metal pipe's setting has improved sealing performance, prevents that the medium from taking place to reveal from between valve rod and the upper cover.

2. The utility model discloses when needing the control valve clack to reciprocate, rotate the hand wheel, the hand wheel drives and changes the cover and rotate on the mount pad, changes the cover and drives adjusting screw and rotate, because of adjusting screw-thread fit is downthehole at the screw thread of valve rod to be equipped with the spacing slider of the cooperation of sliding on the spout of uide bushing on the valve rod, so when adjusting screw carries out the pivoted, can drive the valve rod and reciprocate, the valve rod can drive the valve clack and reciprocate in step, it is right to reach the utility model discloses carry out the effect of opening and close, this structural design is reasonable, reliable and stable.

3. The utility model discloses a be provided with the oiling passageway, convenience of customers adds lubricating oil to the threaded hole to improve the smooth degree when adjusting screw drives the valve rod and reciprocates.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is an enlarged schematic view of the upper half of fig. 1.

In the figure: 1. a valve body; 2. an upper cover; 3. a valve clack; 4. a valve stem; 5. a metal bellows; 6. a cover; 7. a screw head; 8. a stationary ring; 9. a fixing plate; 10. adjusting the screw rod; 11. rotating the sleeve; 12. a hand wheel; 13. a mounting seat; 14. a guide sleeve; 15. a support; 16. a threaded hole; 17. a limiting slide block; 18. a chute; 19. an oil injection channel; 20. an oil outlet; 21. a cover plate; 22. an oil filling port; 23. a plug; 24. and (5) sealing rings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings 1-2 in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The embodiment is as follows:

as shown in fig. 1 and fig. 2, the utility model discloses a bellows sealing stop valve, which comprises a valve body 1, an upper cover 2, a valve clack 3 and a valve rod 4, wherein the upper cover 2 is fixedly connected above the valve body 1, the valve clack 3 is arranged in the valve body 1, the lower end of the valve rod 4 is fixedly connected with the valve clack 3, the upper end of the valve rod 4 upwards penetrates out of the upper cover 2, a valve rod driving mechanism for driving the valve rod 4 to move up and down is arranged on the valve rod, a metal bellows 5 is arranged in the valve body 1, the metal bellows 5 is sleeved outside the valve rod 4, the upper end of the metal bellows 5 is fixedly connected with an umbrella-shaped cover 6, a screw head 7 for being connected with the upper cover 2 in a threaded manner is arranged on the cover 6, a fixing ring 8 is arranged on the lower side edge of the cover 6, the fixing ring 8 is tightly pressed between the upper cover 2 and the valve body 1, a fixing plate 9 is fixedly connected with the lower end of the metal bellows 5, fixed plate 9 fixed connection is on valve clack 3, and foretell corrugated metal pipe 5's setting can improve the utility model discloses a sealing performance, the medium in the valve body 1 need just can enter into between valve rod 4 and the upper cover 2 through corrugated metal pipe 5 or housing 6 to prevented that the medium from taking place to reveal from between valve rod 4 and the upper cover 2.

Specifically, the valve rod driving mechanism comprises an adjusting screw rod 10, a rotating sleeve 11, a hand wheel 12, a mounting seat 13 and a guide sleeve 14, the outer side wall of the upper cover 2 is fixedly connected with a bracket 15, the mounting seat 13 is fixedly connected on the bracket 15, the mounting seat 13 is positioned above the valve rod 4, the rotating sleeve 11 is fixedly sleeved outside the adjusting screw rod 10, the rotary sleeve 11 is rotatably connected to the mounting base 13, the hand wheel 12 is fixedly connected to the outer side wall of the rotary sleeve 11, the valve rod 4 is provided with a threaded hole 16 with an upward opening, the lower end of the adjusting screw 10 is in threaded fit in the threaded hole 16, the upper end of the valve rod 4 is fixedly connected with a limiting slide block 17, the guide sleeve 14 is connected on a bracket 15, the guide sleeve 14 is sleeved outside the valve rod 4, a sliding groove 18 is formed in the guide sleeve 14, and the limiting sliding block 17 is matched on the sliding groove 18 in a sliding mode.

The utility model discloses when needing control valve clack 3 to reciprocate, rotate hand wheel 12, hand wheel 12 drives and changes cover 11 and rotate on mount pad 13, changes cover 11 and drives adjusting screw 10 and rotate, because of adjusting screw 10 screw-thread fit is in the screw hole 16 of valve rod 4 to be equipped with the spacing slider 17 of the cooperation of sliding on the spout 18 of uide bushing 14 on the valve rod 4, so when adjusting screw 10 carries out the pivoted, can drive valve rod 4 and reciprocate, valve rod 4 can drive valve clack 3 and reciprocate in step, it is right to reach the utility model discloses the effect of opening and close.

In order to facilitate the adjusting screw 10 to drive the valve rod 4 to move up and down, the upper end of the adjusting screw 10 penetrates through the rotating sleeve 11, the adjusting screw 10 is provided with an oil injection channel 19, the oil injection channel 19 penetrates through the upper end and the lower end of the adjusting screw 10, in addition, the side wall of the adjusting screw 10 is provided with a plurality of oil outlet holes 20, the oil outlet holes 20 are communicated with the oil injection channel 19, and through the structure, when lubricating oil is added into the oil injection channel 19, the lubricating oil can reach the threaded hole 16 and the guide sleeve 14, so that the valve rod 4 can move smoothly.

In order to prevent dust and impurities from entering the oil filling channel 19, a cover plate 21 for covering the upper end of the oil filling channel 19 is rotatably connected to the rotary sleeve 11.

In addition, in order to improve the smoothness of rotation between the rotating sleeve 11 and the mounting seat 13, an oil filling port 22 leading to the rotating sleeve 11 is formed in the side wall of the mounting seat 13, and a plug 23 is arranged on the oil filling port 22.

The utility model discloses in, in order to improve the sealed degree of upper cover 2 and valve body 1 when compressing tightly retainer plate 8, all be equipped with sealing washer 24 on the upper and lower both sides of retainer plate 8.

The utility model that should point out simultaneously indicates the terminology, like: the references to "front", "rear", "vertical", "horizontal", etc. indicate orientations or positional relationships based on the orientation or positional relationship shown in the drawings, merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the invention.

The above description is only for the preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a bellows seal stop valve, includes valve body, upper cover, valve clack and valve rod, its characterized in that: upper cover fixed connection is in the valve body top, the valve clack sets up in the valve body, the lower extreme and the valve clack fixed connection of valve rod, the upper end of valve rod upwards penetrates out the upper cover, be equipped with on the valve rod and be used for driving its valve rod actuating mechanism that reciprocates, be equipped with corrugated metal pipe in the valve body, corrugated metal pipe cover is established outside the valve rod, corrugated metal pipe's upper end fixedly connected with is umbelliform housing, be equipped with on the housing and be used for threaded connection at the overhead nipple of covering, be equipped with the retainer plate on the downside edge of housing, the retainer plate is compressed tightly between upper cover and valve body, fixedly connected with fixed plate on corrugated metal pipe's the lower extreme, fixed plate fixed connection is on the valve clack.

2. A bellows seal shut-off valve according to claim 1, wherein: valve rod actuating mechanism is including adjusting screw, commentaries on classics cover, hand wheel, mount pad and uide bushing, fixedly connected with support on the lateral wall of upper cover, mount pad fixed connection is on the support, the mount pad is located the valve rod top, change the fixed cover of cover and establish outside adjusting screw, change the cover and rotate to connect on the mount pad, hand wheel fixed connection is on changeing the lateral wall of cover, it has opening screw hole up to open on the valve rod, adjusting screw's lower extreme screw-thread fit is in the screw hole, fixedly connected with limit slider on the upper end of valve rod, the uide bushing is connected on the support, the uide bushing cover is established outside the valve rod, it has the spout to open in the uide bushing, limit slider slides and cooperates on the spout.

3. A bellows seal shut-off valve according to claim 2, wherein: the upper end of the adjusting screw penetrates out of the rotating sleeve, the adjusting screw is provided with an oil injection channel, and the oil injection channel penetrates out of the upper end and the lower end of the adjusting screw.

4. A bellows seal shut-off valve according to claim 3 wherein: and a plurality of oil outlet holes are formed in the side wall of the adjusting screw rod and are communicated with the oil injection channel.

5. A bellows seal shut-off valve according to claim 3 wherein: and the rotating sleeve is rotatably connected with a cover plate for covering the upper end of the oil injection channel.

6. A bellows seal shut-off valve according to claim 2, wherein: an oil filling port communicated with the rotating sleeve is formed in the side wall of the mounting seat, and a plug is arranged on the oil filling port.

7. A bellows seal shut-off valve according to claim 1, wherein: and sealing rings are arranged on the upper side and the lower side of the fixing ring.